# Manage RCS blocklist with keywords

Configure RCS inbound keywords to automatically add or remove end users from your sender blocklist. This tutorial describes how to set up keyword-based blocklist management for opt-out and opt-in control.

## Prerequisites

- **[Infobip account](https://portal.infobip.com/login/?callback=https%3A%2F%2Fportal.infobip.com%2F)**. If you do not have one, you can [create a free trial account](https://www.infobip.com/docs/essentials/getting-started/create-an-account).
- **[RCS sender](https://www.infobip.com/docs/rcs/get-started)** registered in testing phase or launched on carriers.
- **RCS channel** active on your account (full plan or free trial).

## Implementation steps [#implementation-steps]

### Add to blocklist [#add-to-blocklist]

1. On the [Infobip web interface](https://portal.infobip.com/login), go to **Channels and numbers** > **Channels** > **RCS Business Messaging** > **Senders**.
2. Select the sender for which you want to add the keyword setup.
3. Select **Edit inbound configuration**.
4. Under **Keywords**, select **Add keyword**.

In the keyword configuration menu, fill out all the required fields:

5. **Keyword**: `STOP`

6. **Forwarding action**: Select one of the following:
   - **Follow subscription**
   - **Forward to HTTP**

We recommend using subscriptions instead of Forward to HTTP.

Simpler management - One subscription can cover inbound messages for multiple numbers, making it easier to create and update.

Better security - You can make an authentication configuration in Subscription management as a security measure for your event notifications.

7. **Non-forwarding action**: Select **Auto response**
   - **Message**: Enter the message that will be automatically sent to your customers
   - **Sender** (optional): Enter the sender name (from Sender Details) for which you are creating the keyword setup

8. **Blocking action**:
   - **Type**: Select **Add to blocklist**
   - **Level**: Select **From this sender**

9. **Application and entities** (optional): Connect an application and entity with this inbound action for invoicing and reporting purposes if you are using a [CPaaS X](https://www.infobip.com/docs/cpaas-x) structure.

10. After all the fields are selected and filled, confirm the setup by selecting **Add keyword**.

The keyword is now visible in the inbound configuration.

### Remove from blocklist [#remove-from-blocklist]

1. On the Infobip web interface, go to **Channels and numbers** > **Channels** > **RCS Business Messaging** > **Senders**.
2. Select the same sender.
3. Select **Edit inbound configuration**.
4. Under **Keywords**, select **Add keyword**.

In the keyword configuration menu, fill out all the required fields:

5. **Keyword**: `STOP`

6. **Forwarding action**: Select one of the following:
   - **Follow subscription** (our selection)
   - **Forward to HTTP**

7. **Non-forwarding action**: Select **Auto response**
   - **Message**: Enter the message that will be automatically sent to your customers
   - **Sender** (optional): Enter the Sender name (from Sender Details) for which you are creating the keyword setup

8. **Blocking action**:
   - **Type**: Select **Remove from blocklist**
   - **Level**: Select **From this sender**

9. **Application and entities** (optional): Connect an application and entity with this inbound action for invoicing and reporting purposes if you are using a [CPaaS X](https://www.infobip.com/docs/cpaas-x) structure.

10. After all the fields are selected and filled, confirm the setup by selecting **Add keyword**.

The keyword is now visible in the inbound configuration.

## Additional resources [#additional-resources]

- [RCS](https://www.infobip.com/docs/rcs)
- [Create your RCS sender](https://www.infobip.com/docs/rcs/get-started)
- [CPaaS X application and entity management](https://www.infobip.com/docs/cpaas-x/application-and-entity-management)